Unable to get groovy source code through rosinstall [closed]

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I am trying to follow the instructions for installing groovy through source code here from the ros website

but I am getting this error when I run the rosinstall generator:

$ rosinstall_generator desktop-full --rosdistro groovy --deps --wet-only > groovy-desktop-full-wet.rosinstall
# rosdistro.get_cached_release() has been deprecated in favor of the new function rosdistro.get_cached_distribution() - please check that you have the latest versions of the Python tools (e.g. on Ubuntu/Debian use: sudo apt-get update && sudo apt-get install --only-upgrade python-bloom python-rosdep python-rosinstall python-rosinstall-generator)
# rosdistro.get_release_cache() has been deprecated in favor of the new function rosdistro.get_distribution_cache() - please check that you have the latest versions of the Python tools (e.g. on Ubuntu/Debian use: sudo apt-get update && sudo apt-get install --only-upgrade python-bloom python-rosdep python-rosinstall python-rosinstall-generator)
Could not fetch information for stack 'slam_gmapping' with version '1.2.8': HTTP Error 404: Not Found (https  :  //  code DOT ros DOT org/svn/release/download/stacks/slam_gmapping/slam_gmapping-1.2.8/slam_gmapping-1.2.8.yaml)

Also, I am not sure why I am getting those deprecated function errors, I believe I am up to date:

python-rosinstall Version: 0.7.3-1

python-rosinstall-generator Version: 0.1.7-1

python-bloom Version: 0.7.3-1

python-rosdep Version: 0.10.25-1